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Finding the Fourth Proportional to 20,259, 27,958.14 and 11,876.04

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Solution

The fourth proportional to 20,259, 27,958.14 and 11,876.04 is: 16,389.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259 : 27,958.14 = 11,876.04 : x
  2. Step 2: Convert to fraction form
    20,259/27,958.14 = 11,876.04/x
  3. Step 3: Cross multiply
    20,259x = 27,958.14 × 11,876.04
  4. Step 4: Simplify right side
    20,259x = 332,031,988.97
  5. Step 5: Solve for x
    x = 332,031,988.97/20,259
  6. Step 6: Final answer
    x = 16,389.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.